It is May 1970. Don sells his apartment. At work, Johnny Mathis fumbles a pitch and seeks Don's advice. When Don advises him to make a joke, Mathis' attempt goes over horribly, and he blames Don for it, lashing out at him. Don fires Mathis. Joan goes on a trip to California and begins an affair with a retiree named Richard (Bruce Greenwood). Richard initially rejects her when he learns Joan has a child, but later makes amends. As Sally prepares to go on a 12-day school trip, she is unexpectedly visited by Glen Bishop, who reveals that he is shipping out to Vietnam. At first he claims he is doing so for ideological reasons, but later he reveals to Betty that he flunked out of college and attempts to make a move on her. After witnessing inappropriate flirtation between Betty and Glen, and later between Don and one of her friends, Sally is further disillusioned with both parents.